What Are The Odds Of Getting A Girl Pregnant Without Penetrating Her?

If you ejaculated at all, or even if "pre-cum" was present - any seminal fluids, you risk pregnancy.  If you are new to the "sex" thing, I would recommend that you go to the drug store and purchase condoms.  Practice putting them on by yourself, so you don't get flustered when the moment is right.  Never rely on the woman to provide birth control, if you don't want to be a daddy, YOU take care of business.  If you aren't ready to be responsible about sex, you probably aren't really ready for sex.

If you want to have sex then your position should be as that no sperm can go inside. You shouldn't be up to your partner. Always put your back on the bed. These are a few preventive measures but using condoms is the best way to prevent pregnancy.